Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D339/00—Heterocyclic compounds containing rings having two sulfur atoms as the only ring hetero atoms
  • C07D339/02—Five-membered rings
  • C07D339/06—Five-membered rings having the hetero atoms in positions 1 and 3, e.g. cyclic dithiocarbonates
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
  • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
  • A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
  • A01N47/22—O-Aryl or S-Aryl esters thereof

Definitions

• the present invention concerns and has for its object the provision of new O-phenyl-carbamates of Formula I Xa-Ra in which each of R and R is hydrogen, lower alkyl or lower alkenyl, each of X and X is hydrogen, a saturated or unsaturated lower aliphatic radical, halogeno or nitro, X is oxygen or sulfur and each of R and R are alkyl, alkenyl or alkynyl or, when taken together, represent alkylene or alkenylene forming with the remaining moiety a 5 to 7 membered heterocycle, and in which R and R are unsubstituted or substituted by lower aliphatic radicals, halogeno, nitro or free or etherified hydroxy or mercapto, as well as of corresponding pesticidal preparations and methods for the preparation and application of these products. Said preparations are useful in the control of a wide variety of vegetable and animal pests.
• radicals R and R are identical or different and represent, for example, hydrogen, methyl, ethyl nor i-propyl or allyl.
• the moiety s-Rs ⁇ 0R4 in 0- or m-position results from reacting the corresponding aldehyde, semiacetal or semimercaptal, for example, with methanol, ethanol, propanol, isopropanol, allyl alcohol, propargyl alcohol, Z-methoxyethanol, Z-methylmercaptoethanol, 2-chlorethanol, 2-bromethanol or Z-hydroxyethanethiol, or the corresponding semiacetal with methylmercaptan, ethylmercaptan, n-propylmercaptan, isopropylmercaptan, n-butylmercaptan, allylmercaptan, chlorallylmercaptan, dichlorallylmercaptan, propargylmercaptan, 2- methoxyethanethiol, or 2-methylmercaptoethanethiol.
• R and R when taken together, represent alkylene or alkenylene, said moiety results from the reaction of
• each of R and R is preferably lower alkyl, lower alkenyl, lower alkynyl, lower alkoxy-lower alkyl, lower alkylmercapto-lower alkyl, halo-lower alkyl, hydroxy-lower alkyl, halo-lower alkenyl, or R and R when taken together, preferably lower alkylene, monoor dihalo-lower alkylene, lower alkoxy-lower alkylene, lower alkenyloxy-lower alkylene, lower alkynyloxy-lower alkylene, lower alkanoyloxy-lower alkylene, lower alkylmercapto-lower alkylene, halo-lower alkenylmercapto-lower alkylene, hydroxy-lower alkylene, nitro-lower alkylene, lower alkenylene, hydroxy-lower alkenylene or lower alkadienylene.
• the radicals X and X are identical or different and represent, for example, hydrogen, lower alkyl, e.g. methyl, lower alkoxy, alkenyloxy or alkynyloxy or -mercapto or haloalkenylmercapto, e.g. methoxy, isopropoxy, allyloxy, propargyloxy, methylmercapto, allylmercapto or chlorallylmercapto, halogeno, e.g. fluoro, chloro, bromo or iodo, trifiuoromethyl, nitro, di-lower alkylamino or di-lower alkenylamino.
• X and X each represents a hydrogen atom, a lower alkyl or a lower alkoxy radical. Accordingly, the above mentioned aldehydes, represent, for example,
• the compounds of the invention exhibit valuable properties, for example, biocidal, especially insecticidal and acaricidal properties. Furthermore, they act also as herbicides, bactericides, fungicides and molluscicides. Inter alia, these carbamates develop a very strong action, for example, against housefiies, aphids, caterpillars and beetles, for example, corn weevil and Colorado beetle. Their contact effect is far superior to that of the known active substance carbaryl (N-methyl-a-naphthylcarbamate).
• herbicides are not only suitable for use as herbicides, but When applied in a concentration that does not produce phytotoxic effects, they may also be used in plant protection since they develop an excellent effect against harmful microorganisms, for example against fungi, for example Alternarz'a solani, Phytophthora infestans and Septoria apii, as well as against harmful insects, acarids, nematodes and their ova and larvae. They may also be used quite generally as microbicides, for example, against Aspergillus species.
• each of R and R is hydrogen, lower alkyl or lower alkenyl
• each of X and X is hydrogen, lower alkyl, lower alkoxy, lower alkenyloxy, lower alkynyloxy, lower alkylmercapto, lower alkenylmercapto, lower alkynylmercapto, lower haloalkenylmercapto, halogeno, trifluoromethyl, nitro, di-lower alkylamino or di-lower alkenylamino
• X is oxygen or sulfur and each of R and R is lower alkyl, lower alkenyl, lower alkynyl, lower alkoxy-lower alkyl, lower alkylmercapto-lower alkyl, halolower alkyl, hydroxy-lower alkyl, halo-lower alkenyl or R and R when taken together, represent lower alkylene, monoor di-halo-lower alkylene, lower alkoxy-low
• each of X and X is hydrogen, methyl, chloro, bromo, trifluoromethyl or nitro
• X is oxygen or sulfur and each of R and R is lower alkyl, lower alkenyl or lower alkynyl or R and R when taken together represent alkylene or alkenylene with 2 to 4 carbon atoms, forming with the remaining moiety a 5 to 7 membered heterocycle and being unsubstituted or substituted by halogen, nitro, hydroxy, lower alkoxy or lower alkenyloxy.
• the compounds of the invention are prepared, for example, by reacting a phenol of the Formula V X3R3 x, o ⁇ 1 ⁇ O-Rl X1 (V) with a reactive derivative of carbonic acid and with The reaction of the phenol with the reactive derivative of carbonic acid and the amine may be carried out in either sequence, depending to some extent on the constitution of the required final product.
• said phenol or an alkali metal salt thereof may be reacted, for example, with phosgene and the resulting chlorocarbonate or carbonate condensed with R -NH-R
• said amine may be first reacted with phosgene and the resulting carbamic acid chloride or (when R or R represents hydrogen) the isocyanate readily formed from it, may be reacted with the phenol.
• a urethane derived from the amine preferably an alkyl urethane, may be reacted with the phenol (transesterification). It is also possible to react a urea derived from the amine with the phenol preferably at a raised temperature.
• the carbamates of this invention may be designated as derivatives of 1,3-dioxolan (from 1,2- glycols), of 1,3-dioxan (from 1,3-glycols), of 1,3-dioxepan (from 1,4-glycols) or of 1,3-oxathi0lans (from 1,2- hydroxymercaptans)
• the starting materials used are known or, if new, can be prepared analogous to the method for the known products (cf.
• the phenols of Formula V are prepared by reacting an orthoor meta-hydroxy-benzaldehyde with a lower alcohol or mercaptan in the presence of an acid catalyst, for example zinc chloride, a mineral acid or paratoluenesulphonic acid. These reactions may also be carried outwith aldehyde derivatives, for example oximes, aldehydanils or acetals (transacetalization).
• an acid catalyst for example zinc chloride, a mineral acid or paratoluenesulphonic acid.
• aldehyde derivatives for example oximes, aldehydanils or acetals (transacetalization).
• Another suitable route is the acetalization with the aid of ortho-formic acid esters, formimine ethers, dimethylsulphite or orthosilicic acid esters in the presence of lower aliphatic alcohols.
• Another route leading to said phenols is the reaction of suitable halides with alkali metal or alkaline earth metal alcoholates.
• Said acetalization may be performed in two stages, with the semiacetals or semimercaptals being formed in the first reaction stage.
• mixed acetals i.e. monothioacetals
• optically active alcohols or mercaptans When optically active alcohols or mercaptans are used, there may be prepared optically active phenols of the Formula V and from them opticaly active carbamates of the Formula I. If its acetal moiety is cyclic and substituted, further isomerizing possibilities oifer themselves. A carbamate of the Formula I whose acetal residue is monosubstituted may be obtained in the cis-form or transform.
• the present process for the manufacture of said carbamates given rise to mixtures of all possible isomers; these mixtures can 'be separated into their constituents by known methods, for example by crystallization.
• the stereoisomer mixtures obtained in the manufacture of the active substances are generally used.
• the present invention also provides pesticidal preparations comprising as the active ingredient at least one carbamate of the Formula I and, if desired, one of the following additives.
• additives are those commonly used in pesticidal preparations such as vehicles, solvents, diluents, dispersants, Wetting agents, adhesives, fertilizers and, if required, further pesticides.
• Corresponding spray solutions are prepared, for example, with petroleum fractions having a high to medium boiling range, for example diesel oil or kerosene, coal tar oil, or oils of vegetable or animal origin, as well as hydrocarbons, for example alkylated naphthalenes, tetrahydronaphthalene, if desired or required with the use of xylene mixtures, cyclohexanols, ketones or chlorinated hydrocarbons for example trichloroethane or tetrachloroethane, trichloroethylene or trior tetra'chlorobenzenes. It is advantageous to use organic solvents having a boiling point above C.
• petroleum fractions having a high to medium boiling range for example diesel oil or kerosene, coal tar oil, or oils of vegetable or animal origin
• hydrocarbons for example alkylated naphthalenes, tetrahydronaphthalene, if desired or required with the use of xylene
• Suitable emulsifiers or dispersants are non-ionic products, for example condensation products of aliphatic alcohols, amines or carboxylic acids with a long-chain hydrocarbon residue of about 10 to 20 carbon atoms with ethylene oxide, for example the "condensation product from octadecyl alcohol with 25 to 30 mols of ethylene oxide, or of commercial oleylamine with 15 mols of ethylene oxide, or of dodecylmercaptan with 12 mols of ethylene oxide.
• anionic emulsifiers there may be mentioned the following: The sodium salt of dodecylbenzosulphonic acid, the potassium of triethanolamine salt of oleic acid or of abietic acid or of a mixture of these two acids, or the sodium salt of a petroleumsulphonic acid.
• Suitable cationic dispersants are quaternary ammonium compounds, for example cetyl pyridinium bromide and dihydroxyethyl benzyl dodecyl ammonium chloride.
• talcum for the manufacture of dusting and casting preparations, there may be used as solid vehicles: talcum, kaolin, bentonite, calcium carbonate, calcium phosphate or coal, cork meal, wood meal or other materials of vegetable origin. It is also very advantageous to manufacture the preparations in the form of granulates.
• the various forms of application may contain the conventional additives that improve the distribution, the adhesion, stability to rain or the penetration; as such substances there may be mentioned fatty acids, resin, glue, casein and alginates.
• preparations of this invention may be used by themselves or in conjunction or admixture with conventional pesticides, especially insecticides, acaricides, nematocides, bactericides, fungicides, herbicides and the like.
• EXAMPLE 1 (a) Ortho( 1,3 -dioxolan-2-yl) -phenol A mixture of 244 parts of salicylaldehyde, parts of ethyleneglycol, 1 part of zinc chloride, 1 part by volume of concentrated phosphoric acid and 500' parts by volume of benzene was boiled in a circulating distillation apparatus until water was no longer being eliminated. The solution of the product was filtered and evaporated. The residue was distilled under a high vacuum. The product boiled at 88 to 91 C. under 0.04 mm. Hg pressure and melted at 67 to 70 C.
• EXAMPLE 2 then dropwise with 122 parts of salicylaldehyde; the temperature of the mixture rose.
• the reaction mixture was stirred for 1 hour at room temperature, then diluted with 500 parts by volume of ether and washed with sodium bicarbonate solution and then with water until the wash- When glycols (polyols) were reacted with unsubsti- 5 tuted or substituted orthoor meta-hydroxybenzaldehydes, lngs ran neutral.
• the solution was dried over anhydrous the condensation as described 1n
• Example 1 led to cy- SOdwm sulphate, filtered and evaporated.
• 1 4(6)-tn'fluoromethyl-salieylaldehyde can be prepared from B-trifluoromethylphenol by the method of J. O. Dufi [.T. Chem. Soc. 1941, page 547, Free. Iowa Acad. Sci. 52, page 191 (1945)]. It boils at 77 to 80 C. under 14 mm. Hg pressure.
• Spray powder To manufacture a spray powder, the following ingredients, for example, were mixed and then finely ground.
• Emulsion concentrate Readily soluble active substances were also formulated in the form of an emulsion concentrate as follows.
• Parts Active substance 20 Xylene 70 Mixture of a reaction product of an alkylphenol with ethylene oxide and calcium dodecyl benzenesulphonate were mixed. On dilution with Water to the desired concentrat1on, an emulsion suitable for spraying was obtained.
• EXAMPLE 7 The active substance of Example 1 and the active substance carbaryl were subjected to a comparative test to establish their contact effect against houseflies and corn 'Weevils. The new substance displayed a much greater, distinct contact-insecticidal effect.
• Example 1 When applied in a concentration of 0.04% in the control of aphids (aphis fabae) on young bean plants, it was found that after 2 days the active substance of Example 1 had completely destroyed the aphids. It was found to have a good diffusion and distinct systemic effect.
• Carbaryl was found to be ineffective in these tests.
• Carbaryl is the common name for l-naphthyl-N-methyl-carbamate.
• the above-mentioned active substance is active in limited concentrations of 1.2 parts per million against aedes larvae (24 hours).
• Example 1 acts also against spider mites (Tetranychus urticae).
• EXAMPLE 8 Cont-act action against Musca domestica The test was carried out in a Petri dish. 1 ml. of a 1000 ppm. acetonic solution of active ingredient to be tested is pipetted on each of the two halves. After evaporation of the solvent 10 immobilized flies (cooling of the test individuals in a test tube in crushed ice) were put on the bottom of the dish whereupon the lid was put on. Within a few minutes all the flies were back to normal. Control took place after one hour and the results are given below as the knockdown effect in percent.
• EXAMPLE 10 Action against midges (Aedes aegypti) Compound: 3 hours, percent Example 1 100 Example 2.1 100 Example 2.2 100 Example 4 100 1 1 EXAMPLE 11 Action against bugs (Cimex lectularius)
• This test was carried out according to the statement in Example with the following exceptions: the acetonic solution (1 ml. of a 10 p.p.m. solution of active ingredient) was applied to filter paper which was placed on the bottom of a Petri dish of 9 cm. of diameter. Ten adult bugs were put on the paper and exposed for 48 hours to the action of the active ingredient. The test was repeated twice with the following results. killed bugs (twice 10 bugs) are indicated as 100%.
• Example 1 100
• Example 2.2 100 EXAMPLE 12 Action against cockroaches (Periplarzeta americana and Blatta orientalis)
• a 5% dusting agent was prepared according to Example 6 using as carrier exclusively talcum.
• a dilution series with progressive dilution was made in which every step contained half the quantity of active ingredient contained in the preceding step. Accordingly, the series thus made had a content of active ingredient of 5, 2.5, 1.2, 0.6, 0.3, 0.15, 0.08% which corresponds to an amount of 100, 50, 25, 12.5, 6.2, 3.1, 1.5 mg. of active ingredient per m9 when 2 g.
• a compound as claimed in claim 2 which is ortho- (4,5-dimethyl 1,3 dioxolan 2 yl)-phenyl-N-methylcarbamate.
• a compound as claimed in claim 2 which is ortho- 1 ,3-oxathiolan-2-yl) phenyl-N-methylcarbamate.
• An O-phenyl carbamate compound selected from the group consisting of ortho-(1,3-dioxolan-2-yl)-rneta'-methylphenyl-N- methyl-carbamate; ortho-( 1,3-dioxolan-2-y1) para-methylphenyl-N- methyl-carbamate; para-chloro-ortho-( 1,3 dioxolan-2-yl phenyl-N- methyl-carbamate; para-bromo-ortho-( 1,3-dioxolan-2-yl phenyl-N- methyl-carbamate; ortho-para-dibromo-ortho'- 1,3 -diox0lan-2-y1) phenyl- N-methyl-carbamate; ortho,para-dinitro-ortho-( 1,3-dioxo1an-2-yl phenyl- N-methyl-carbamate; and ortho,para-di
• An O-phenyl carbamate compound selected from the group consisting of ortho-(4-vinyl-1,3-dioxolan-2-yl)phenyl-N-methylcarbamate; ortho- (4-chloromethy1- l ,3 dioxolan-Z-yl phenyl-N- methyl-carbamate ortho-( 1,3-dioxan-2-yl)-pheny1-N-methyl-carbamate; ortho- (4-methyl- 1,3-dioxan-2-yl phenyl-N-methylcarbamate; ortho- (5,5-dimethyl- 1, 3-dioxan-2-yl phenyl-N-methylcarbamate; ortho- (4, 5,6-trimethyl-1,3-dioxan-2-yl)phenyl-N- methyl-carbamate; ortho-(S-methyl-S-nitro-1,3-dioxan-2-yl)-phenyl-N- methyl-carba

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• Health & Medical Sciences (AREA)
• Plant Pathology (AREA)
• Engineering & Computer Science (AREA)
• Dentistry (AREA)
• General Health & Medical Sciences (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Environmental Sciences (AREA)
• Pest Control & Pesticides (AREA)
• Agronomy & Crop Science (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

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• 1964
  • 1964-10-08 CH CH1311364A patent/CH468977A/de unknown
• 1965
  • 1965-10-04 GB GB41988/65A patent/GB1122633A/en not_active Expired
  • 1965-10-05 SE SE12877/65A patent/SE327113B/xx unknown
  • 1965-10-07 OA OA52206A patent/OA01830A/fr unknown
  • 1965-10-07 IL IL24427A patent/IL24427A/en unknown
  • 1965-10-07 BE BE670630A patent/BE670630A/xx unknown
  • 1965-10-07 NL NL6513024A patent/NL6513024A/xx unknown
  • 1965-10-07 DK DK514865AA patent/DK118633B/da unknown
  • 1965-10-07 AT AT908865A patent/AT268771B/de active
  • 1965-10-08 BR BR173876/65A patent/BR6573876D0/pt unknown
• 1971
  • 1971-11-10 US US00197474A patent/US3781301A/en not_active Expired - Lifetime
  • 1971-11-15 US US00199008A patent/US3856968A/en not_active Expired - Lifetime

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